| 摘要 |
<p>A method of operating a high voltage DC transmission system with any number of transformer stations. Transformer stations which operate as rectifier stations operate with voltage regulation having a current dependent control input. In the range from 1 per unit to 1- delta per unit of rated voltage, a hard current limit is in effect, and in the range from 1- delta per unit to 1- delta - epsilon per unit rated voltage, the current limiting value is reduced to a minimum current, where delta and epsilon are preselected fractions. Transformer stations which operate as inverter stations principally operate with current regulation and in the voltage range from 1 per unit to 1- delta per unit of rated voltage, the maximum desired current value is reduced from rated current value down to zero.</p> |
